nbc news chief pentagon correspondent jim maiklaszewski joins us now. what do we know? >> it's a tragic story in so many ways. this marine corps reservist, a 25-year-old by the name of eddie ray routh, is in custody facing two capital murder charges in the deaths of that former navy s.e.a.l. sniper, chris kyle, and a friend. but the police still cannot pinpoint a motive. now, friends say that it appeared that routh was suffering ptsd, post-traumatic stress, from his service in iraq, and kyle has a record of working directly with ptsd victims from the wars in iraq and afghanistan, and trying to help them. now, according to reports, this was the first time that kyle and his friend had ever met with routh and they were at a gun range about 50 miles outside of ft. worth saturday when suddenly without warning, routh allegedly pulled a hand gun and shot and killed both of the other men at point-blank range. he's in custody and there is reports that he had to be tasered in his cell overnight for some kind of disruption there in the texas jail, but the search is on for a motive